M3 computer overview, M3 resistance overview, Average calculations – Keiser m3 User Manual

Page 2: Resetting ride averages, elapsed time and distance, Computer calibration, Understanding eddy current resistance, Power = force x velocity, Computer battery replacement, Line 1 rpm (cadence), Line 2 power

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The M3 computer is a powerful teaching and programming tool. The computer can
assist both the instructor and participant by providing immediate feedback as well as
tracking on-going improvement. By experiencing objective cadence, power output,
gears and heart rate, the cyclist benefits from a better overall and more effective
workout. The computer can also be used as a motivating tool to engage participants
in their workouts. The more participants understand the components of a proper
workout, the further they can fine tune their performance. The goal is to work more
effectively and efficiently, and achieve better results.

Line 1 RPM (Cadence) -

The RPM display counts the cyclists revolutions per

minute on one crank arm. RPM is known in the cycling world as Cadence and roughly
is the speed at which the cyclist is pedalling. At above 140 RPM the computer will not
read and the word “STOP” will appear to indicate that the cyclist is pedalling faster
than he or she needs to be. If the cyclist is out of the saddle and wishes to retain
sufficient resistance pedalling should not fall below 60 RPM.

Line 2 Power -

The power output is displayed in Watts (currently generating)

and Kilocalories (total value for the ride). The computer toggles back and forth
between Watts (displayed for eight seconds) and Kilocalories (displayed for two
seconds) throughout the ride.

Line 3 Heart Rate -

If there is no heart rate signal, a steady heart symbol and

a zero will be displayed. If a participant is wearing a heart rate strap, and once the
computer locks onto the signal, the heart symbol will blink and display the heart rate.
Please note that the heart rate strap must be Polar™ compatible and coded.

Line 4 Pedaling or Elapsed Time -

The number shown reports the total time

spent cycling and will reset to zero after 60 seconds of inactivity or if computer is
reset using the gear lever.

Line 5 Odometer/Trip Distance and Gear -

For the first eight seconds when

the computer is first activated, the odometer will display the total distance the cycle
has been ridden. This feature is for service and maintenance purposes only. After
eight seconds, the odometer will display trip distance and gears from 1 - 24.

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Average Calculations

To view averages: RPM (cadence), power, and heart rate at any point in the ride, stop
pedaling for three seconds. This will flash your averages until you start pedalling
again or until the computer goes to sleep after 60 seconds.

Resetting Ride Averages, Elapsed Time and Distance

To reset your averages during the ride, stop pedalling for three seconds and the
averages will start to flash, while they are flashing move the gear lever from bottom
to top two times quickly. This will reset your ride information back to zero.

Computer Calibration

1. Cycle display must be blank. If the display is not blank wait

about 50 seconds until it is blank.

2. Activate the display by rotating the crank pedal. As soon as

it is active stop the crank movement.

3. Move the shifter from full retract (lowest resistance) to full
advanced (highest resistance) at least five times. These five

retractions must be done within five seconds.

4. Computer will indicate it is calibrated by showing “55:55”. If

you do not see the “55:55” start over from step # 1.

5. Retract shifter (lowest resistance) and computer should
show gear “1”. Advance shifter (increase resistance) and
computer should show gears changing “1” through “24”.

6. Continue beyond gear “24” and “88” will flash. This is the
emergency brake area, where the end of the shifter is about

1” to 1 ¼” off the top of the handlebar. If you do not see the

flashing “88” start over from step # 1.

Be

gin Calibr

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Calibr

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M3 COMPUTER OVERVIEW

The Keiser M3 is a revolutionary new way to cycle, with a focus on power output. The
understanding of the M3 resistance system can best be described in the explanation
of eddy current resistance and the formula for power (Power = Force x Velocity).

Understanding Eddy Current Resistance

An eddy current is an electrical current in a conducting material that results from
induction by a moving or varying magnetic field. On the M3, this is generated by
the wheel passing through two opposing magnets. The flywheel (a conductor)
passes through the magnetic field generated by the two powerful magnets. By varying
how much of the magnetic field comes into contact with the flywheel, the amount of
resistance will increase or decrease for the cyclist. This resistance system also allows
the cyclist a smoother, quieter, and more predictable ride.

Another major factor that plays a role in resistance is speed. The faster the flywheel
turns, the more energy is generated, and thus the more resistance is created.

Power = Force X Velocity

Power (amount of work being done in a given amount of time by the cyclist) = force
(the amount of resistance) x velocity (the cadence the cyclist is pedaling). This is
the same formula that all outdoor cycles follow. By pedalling faster the difficultly
increases as the resistance increases. The same applies to the M3, at a set gear the
resistance can be increased or decreased by adjusting the cyclists cadence.

In this way the M3 cycle is very similar to outdoor cycling. The higher the gear, the
higher the cadence the more power produced.

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Rotating Magnet Housing

Cutaway Revealing Magnet

Flywheel

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If the flywheel is in less contact with the magnetic field, it is easier to ride. The more
of the flywheel that comes in contact with the magnetic field (the higher the energy
that is being generated with each turn) the more difficult it becomes to pedal.

Computer Battery Replacement

To test the computer batteries rotate the crank arm until the computer “wakes up”.
If the battery is low, a “LO-BA” will display in the odometer (ODO) display at the
bottom of the computer. To replace the batteries unscrew the back of the computer
housing and remove old AA batteries and replace with a set of two new AA
batteries. If you have multiple bikes, we suggest all computer batteries be changed
at the same time.

M3 RESISTANCE OVERVIEW

Unscrew Here

Lift to Reveal Battery Area

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